Gemini/GeminiRenderer/RenderingBlockView.swift

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//
// RenderingBlockView.swift
// GeminiRenderer
//
// Created by Shadowfacts on 7/13/20.
//
import SwiftUI
import GeminiFormat
struct RenderingBlockView: View {
let block: RenderingBlock
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let changeURL: ((URL) -> Void)?
init(block: RenderingBlock, changeURL: ((URL) -> Void)? = nil) {
self.block = block
self.changeURL = changeURL
}
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@ViewBuilder
var body: some View {
switch block {
case let .text(text):
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self.text(text)
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case let .link(url, text: linkText):
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self.link(url, text: linkText)
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case let .preformatted(text, alt: _):
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preformatted(text)
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case let .heading(text, level: level):
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heading(text, level: level)
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case let .unorderedListItem(text):
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unorderedListItem(text)
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case let .quote(text):
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quote(text)
}
}
private func text(_ text: String) -> some View {
Text(text)
.font(.documentBody)
.frame(maxWidth: .infinity, alignment: .leading)
}
private func link(_ url: URL, text: String?) -> some View {
let text = text ?? url.absoluteString
return Button {
self.changeURL?(url)
} label: {
Text(verbatim: text)
.font(.documentBody)
.foregroundColor(.blue)
.underline()
.frame(maxWidth: .infinity, alignment: .leading)
}.buttonStyle(LinkButtonStyle())
}
private func preformatted(_ text: String) -> some View {
ScrollView(.horizontal) {
Text(verbatim: text)
.font(.documentBodyPreformatted)
.frame(maxWidth: .infinity, alignment: .leading)
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}
}
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private func heading(_ text: String, level: Document.HeadingLevel) -> some View {
Text(verbatim: text)
.font(level.font)
.frame(maxWidth: .infinity, alignment: .leading)
}
private func unorderedListItem(_ text: String) -> some View {
// todo: should this be .firstTextBaseline?
HStack(alignment: .top, spacing: 4) {
Text(verbatim: "\u{2022}")
Text(verbatim: text)
.font(.documentBody)
Spacer()
}.frame(maxWidth: .infinity, alignment: .leading)
}
private func quote(_ text: String) -> some View {
HStack(spacing: 4) {
Color.gray
.frame(width: 4)
Text(verbatim: text)
.font(Font.documentBody.italic())
.foregroundColor(.gray)
Spacer()
}.frame(maxWidth: .infinity, alignment: .leading)
}
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}
struct RenderingBlockView_Previews: PreviewProvider {
static var previews: some View {
Group {
RenderingBlockView(block: .text("Some Text"))
RenderingBlockView(block: .quote("A Quote"))
}
}
}